Need help sourcing a water pipe please

Hi i need to replace the block to heater matrix pipe like this one… http://www.vwh2o.com/vw.cfm?act=shop.product&pID=34355909&lang=EN&country=GB

But i cant seem to find the metal conector and the next bit of pipe that joins onto that and goes through the bulkhead to the matrix.  :dontknow: can anyone point me in the right direction? Could also do with the rubber grommet that sits in the bulkhead that the pipes go through. Thanks.  

or do you think because its not a genuin part its been made longer so it doesnt nee the other pipe and pipe joiner??  :?